78716165 has 8 divisors (see below), whose sum is σ = 103046688. Its totient is φ = 57248080.

The previous prime is 78716159. The next prime is 78716173. The reversal of 78716165 is 56161787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78716165 - 2¹⁰ = 78715141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715547 + ... + 715656.

It is an arithmetic number, because the mean of its divisors is an integer number (12880836).

Almost surely, 2^78716165 is an apocalyptic number.

It is an amenable number.

78716165 is a deficient number, since it is larger than the sum of its proper divisors (24330523).

78716165 is a wasteful number, since it uses less digits than its factorization.

78716165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431219.

The product of its digits is 70560, while the sum is 41.

The square root of 78716165 is about 8872.2130835547. The cubic root of 78716165 is about 428.5695481134.

The spelling of 78716165 in words is "seventy-eight million, seven hundred sixteen thousand, one hundred sixty-five".